Buying a Z4! Question about wheel fitment

[1Hokie]

Hey guys... So, I am getting my first Z4 in just a few days... I currently have a 128i with a snow tires set and was wondering if it'll fit the Z4 and if I need spacers. And I know there's wheel calculators but I always get confused about offsets and real-world fitments on how much clearance there is on the wheel well makes a huge difference...

Winter setup:
8x18 front ET 47 - 225/40 tires
8,5x18 back ET 50 - 255/40 tires

I know I am getting the 19" sport wheels with the specs
8Jx19 ET29
9Jx19 ET40

So I would assume 15mm spacers up front, 10mm spacers for the rear, but how is that fitment in the wheel well?

[Wiles]

Will work, even without spacers but spacers will make it look better.